(n.) The act or process of refuting or disproving, or the state of being refuted; proof of falsehood or error; the overthrowing of an argument, opinion, testimony, doctrine, or theory, by argument or countervailing proof.

abjuration abjurement abrogation absolute contradiction annulment answer argument argumentum case complete answer confounding confutation cons consideration contradiction contraremonstrance contrary assertion contravention controversion counteraccusation counterblast countercharge counterclaim countering counterreply counterstatement crossing defense demolition demurrer denial disaffirmation disallowance disavowal disclaimer disclamation discrediting disownment disproof effective rejoinder elenchus exception forswearing gainsaying ignoratio elenchi impugnment nullification objection overthrow overthrowal plaidoyer plea pleading pleadings pros pros and cons reason rebuttal rebutter recantation refutal rejoinder renunciation replication reply repudiation response retractation retraction revocation riposte special demurrer special pleading squelch statement of defense subversion surrebuttal surrebutter surrejoinder talking point undermining upset upsetting